AlertDFB is a free emergency alert system that sends you vital updates and information about emergencies and disasters. AlertDFB keeps you up-to-date with relevant information about local emergencies like hurricanes, severe weather conditions, floods, and evacuations. It is our best tool to send you critical information quickly so you can keep yourself and your family safe. You will receive time-sensitive messages however you specify; such as your home phone, cell phone, email address, or even your business phone. You will only receive alerts on what you register.